Top Sites
The top ranked sites in each category.
Many listings in Top Sites by Category are for specific pages or
subdirectories, not for entire sites. For example, in the Reference > Maps
section you'll find mapquest.com (an entire site about maps) and
maps.yahoo.com (one section about maps on a larger site).
For this reason, the listings in the Top Sites by Category are ordered by
Popularity of this listing, and not by the overall Traffic Rank of the site. We
use the same basic traffic ranking technology used for Alexa Traffic Rank
— a combination of users and page views — but apply it only to the
traffic for that specific listing. To find out the Traffic Rank of any site in
the Top Sites by Category directory, just click the name of the site and
you'll be taken to the "Site Info" page for that site.
Search Within a Category
Top Sites in:
Sub-Categories (29)
- Academic Departments (9)
- Agriculture (3,610)
- Anomalies and Alternative Science (481)
- Astronomy (3,505)
- Biology (30,633)
- By Region (0)
- Chats and Forums (16)
- Chemistry (4,102)
- Directories (26)
- Earth Sciences (5,910)
- Educational Resources (345)
- Employment (69)
- Environment (6,442)
- Events (54)
- Instruments and Supplies (2,338)
- Math (9,189)
- Methods and Techniques (189)
- News and Media (233)
- Organizations (128)
- People (0)
- Physics (4,175)
- Publications (236)
- Reference (385)
- Research Groups and Centers (57)
- Science in Society (677)
- Search Engines (9)
- Social Sciences (19,022)
- Software (183)
- Technology (10,281)
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Google Translate
translate.google.comGoogle's free online language translation service instantly translates text and web pages. This... More translator supports: English, Arabic, Bulgarian, Chinese, Croatian, Czech, Danish, Dutch, Finnish, French, German, Greek, Hindi, Italian, Japanese, Korean, Norwegian, Polish, Portuguese, Romanian, Russian, Spanish and Swedish.
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The National Center for Biotechnology Information
ncbi.nlm.nih.govNational Library of Medicine / National Institutes of Health. Offers many important databases (... MorePubMed, GenBank, OMIM) and some tools.
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Time and Date
timeanddate.comYearly and monthly calendars, countdown counters and the world clock which shows current time i... Moren cities all over the world
From the site: More features will be available later - if you have any suggestions, please feel free to send them to webmaster@timeanddate.com
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Urban Dictionary
urbandictionary.comA veritable cornucopia of streetwise lingo, posted and defined by its readers.
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How Stuff Works
howstuffworks.comHowStuffWorks.com is an award winning site covering thousands of topics within its own 10 chann... Moreels: Auto, Computer, Electronics, Entertainment, Health, Home, Money, People, Science and Travel.
From the site: HowStuffWorks, a wholly owned subsidiary of Discovery Communications, is the award-winning source of credible, unbiased, and easy-to-understand explanations of how the world actually works. Founded by North Carolina State University Professor Marshall Brain in 1998, the site is now an online resource for millions of people of all ages. From car engines to search engines, from cell phones to stem cells, and thousands of subjects in between, HowStuffWorks has it covered. ...
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National Geographic
nationalgeographic.comWith a look into the pages of the magazine, plus interactive features, maps, photography, news,... More exhibitions, things for kids, educational features, and hosting live events. Searchable web site.
From the site: From 33 founders in 1888, to a worldwide team today of thousands of dedicated individuals, National Geographic stands at the forefront of exploration, research, and scientific discoveries. The results educate people everywhere, helping them consider today's ever changing world and their place in it. Philanthropic support is critical, propelling projects and expeditions that inspire us all to care about the planet. ...
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Reverso
reverso.netTranslation, dictionary, conjugation, grammar for English, French, Spanish, German, Italian, Ru... Moressian, Chinese, Arabic, Japanese, Hebrew, Polish, Dutch ...
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National Oceanic and Atmospheric Administration (NOAA)
noaa.govan organization of the U.S. Department of Commerce. NOAA warns of dangerous weather, charts our... More seas and skies, guides our use and protection of ocean and coastal resources, and conducts research to improve our understanding and stewardship of the environment which sustains us all.
From the site: NOAA is an agency that enriches life through science. Our reach goes from the surface of the sun to the depths of the ocean floor as we work to keep citizens informed of the changing environment around them. From daily weather forecasts, severe storm warnings and climate monitoring to fisheries management, coastal restoration and supporting marine commerce, NOAA’s products and services support economic vitality and affect more than one-third of America’s gross domestic product. ...
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TED: Ideas Worth Spreading
ted.comTED (Technology, Entertainment, Design) is an invitation-only event where the world's leading t... Morehinkers and doers gather to find inspiration. Initially an annual conference, the scope of TED has expanded to include a bi-annual global conference, a humanitarian prize, and free audio/video podcasts of extraordinary talks.
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University of California, Berkeley
berkeley.eduOfficial Site.... More
From the site: Pharmaceutical companies license UC Berkeley antimalarial technology Archaeologists scratching the surface – on camera Bancroft Library archiving works of pioneering cartoonist Gus Arriola ... A new set of university rankings places Berkeley second worldwide. Should we shout the news from the rooftops, or put it gingerly back in Pandora's box? ...
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The Economist
economist.comAuthoritative weekly newspaper focusing on international politics and business news and opinion... More.
From the site: Economist.com is committed to providing users with an accessible website. New components and accessibility features will be made available during the course of our redesign. Further information about accessibility and Economist.com is available in our Help section.
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Care2
care2.comWith over 14 million members, Care2 is the largest social action network making a difference in... More healthy and green living, human rights, animal welfare and other important causes. Care2 offers petitions, blogs, ecards, news and opportunities to take action on behalf of over 500 nonprofit organizations.
From the site: Care2 make the world greener! 9,617,564 members 29,563,740 signatures 5,235 acres of rainforest saved my care2 my Care2 main my account my click to donate my eCards my friends my groups my kudos my messages my news my page my petitionSite my photos my sharebook my subscriptions ... I started Care2, back in 1998, to help make the world a better place. The idea is simple: Make it easy for everyone to live a healthy, green lifestyle and impact the causes they care about most. ...
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FOX News: Scitech
foxnews.com/scitech/Features science and technology stories and headlines from the television network.
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ScienceDirect
sciencedirect.comAn information source for scientific, technical, and medical research. Subscription required fo... Morer some sections.
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Bureau of Meteorology
bom.gov.auWeather reports and forecasts, weather warnings, climate information, and educational resources... More.
From the site: A brief history of the Bureau of ... Meteorology (external to Bureau's web site) ... A Hundred Years of Science and Service (PDF - 1.14Mb) ... Bureau's Certified Agreement 2006-2008 (PDF - 3.1Mb) ... Slatyer I (1996) - Review of the Operation of the Bureau of Meteorology ... Weather Services in the Bureau of Meteorology ... If you encounter problems reading PDF documents, ensure you have version 3.1 or later of Adobe Acrobat Reader. ...
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United States Geological Survey (USGS)
usgs.govScientific agency for natural sciences, including earth science and biology. Extensive informat... Moreion on U.S. water, biological, energy, and mineral resources, USGS programs, and natural disasters and hazards.
From the site: Mission: The USGS serves the Nation by providing reliable scientific information to describe and understand the Earth; minimize loss of life and property from natural disasters; manage water, biological, energy, and mineral resources; and enhance and protect our quality of life. Vision: USGS has become a world leader in the natural sciences thanks to our scientific excellence and responsiveness to society's needs. ...
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Japan Meteorological Agency
jma.go.jpDescribes the history, organization and activities of the Agency. [several languages]... More
From the site: About us The Japan Meteorological Agency has been operating geostationary meteorological satellites since 1977. Please find below a brief introduction on our organization relevant to meteorological satellite. 1 Headquarters: Planning Satellite Programe Division belongs to the Observations Department of the Japan Meteorological Agency (JMA), and located in the headquarters building in Tokyo . ...
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Guardian.co.uk: Technology
guardian.co.uk/technologyNews and features about the internet and technology. Includes business solutions, science news,... More e-issues and special reports plus web watch, gadgets, games, blogs and Ask Jack.
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ScienceDaily
sciencedaily.comScienceDaily -- the Internet's premier science news web site -- brings you the latest discoveri... Morees in science, health & medicine, the environment, space, technology, and computers, from the world's leading universities and research institutions. Updated several times a day, Science Daily also offers free search of its archive of more than 80,000 stories, as well as related articles, images, videos, books, and journal references in hundreds of different topics, including astronomy, biology, chemistry, engineering, geology, mathematics, physics, and more.
From the site: ScienceDaily is one of the Internet's leading online magazines and Web portals devoted to science, technology, and medicine. The free, advertising-supported service brings you breaking news about the latest discoveries and hottest research projects in everything from astrophysics to zoology. For three years in a row, ScienceDaily has been chosen by the editors of Popular Science magazine as one of the "Top 50 Web Sites." (For more about our awards, please click here .) ...
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Nature.com
nature.comNature.com provides access to all Nature Publishing Group journals, online databases and servic... Morees, including Nature News, and the social network for scientists Nature Network. Nature Publishing Group publishes products across the life, physical and applied sciences and clinical medicine. Nature.com hosts more than 70 journals, including Nature . The site also include Nature Jobs, which features access to job listings, editorial content about scientific careers and other information.
From the site: Login nature news home news archive specials opinion features news blog events blog nature journal ... Phil is in responsible for the editorial content and management of Nature , as well as the long-term quality of all Nature Publications. He has a BSc in aeronautical engineering from the University of Bristol, a MSc in astrophysics from Queen Mary and Westfield College, University of London, and a PhD in upper atmospheric physics from the University of Leicester. ...
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IEEE - Networking The World
ieee.orgThe IEEE promotes the engineering process of creating, developing, integrating, sharing, and ap... Moreplying knowledge about electro- and information technologies and sciences for the benefit of humanity and the profession.
From the site: A non-profit organization, IEEE is the world's leading professional association for the advancement of technology. The IEEE name was originally an acronym for the Institute of Electrical and Electronics Engineers, Inc. Today, the organization's scope of interest has expanded into so many related fields, that it is simply referred to by the letters I-E-E-E (pronounced ...
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GMT
wwp.greenwichmeantime.comProvides information on Greenwich and Time issues, including maps, GMT Converter and resources.
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Babelfish
babelfish.yahoo.comTranslates text and web pages from one language to another, including English, German, Spanish,... More French, Italian, Portuguese, and Russian.
